/Engine/Plugins/Runtime/DataRegistry/Source/DataRegistry/Public/DataRegistrySource.h
Creates a new runtime source, but does not register it yet
[UDataRegistrySource](API\Plugins\DataRegistry\UDataRegistrySource) * CreateTransientSource ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UDataRegistrySource](API\Plugins\DataRegistry\UDataRegistrySource) > SourceClass )